During the flight display (see Sexual Behavior) the male Beautiful Hummingbird utters "a very high, thin to slightly squeaky t-swiik t-swiik ..., or w-siiu w-siiu ...", which is repeated up to four times (Howell and Webb 1995).

There are few available audio recordings of vocalizations of Beautiful Hummingbird; additional examples can be heard at Macaulay Library and atxeno-canto.